Huawei UPS2000-G-3 kVA User Manual
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Huawei UPS2000-G-3 kVA User Manual

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UPS2000-G-3 kVA
User Manual (CTC)
Issue
02
Date
2019-05-05
HUAWEI TECHNOLOGIES CO., LTD.

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Summary of Contents for Huawei UPS2000-G-3 kVA

  • Page 1 UPS2000-G-3 kVA User Manual (CTC) Issue Date 2019-05-05 HUAWEI TECHNOLOGIES CO., LTD.
  • Page 2 Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS"...

  • Page 3: About This Document

    About This Document About This Document Purpose This document describes the UPS2000-G-3 kVA in terms of features, performance, appearance, structure, working principle, installation, use, operation, and maintenance. UPS is short for uninterruptible power supply. Unless otherwise specified, UPS refers to all the models discussed in this document.
  • Page 4 Changes between document issues are cumulative. The latest document issue contains all the changes made in earlier issues. Issue 02 (2019-05-05) Updated the section "Operating Environment." Issue 01 (2019-03-15) This issue is the first official release. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 5: Table Of Contents

    3.4 Check After Installation .............................. 23 4 Control Panel ..........................25 4.1 Introduction ................................25 4.2 Indicators ..................................25 4.3 Functional Buttons ..............................26 4.4 LCD .................................... 27 4.5 LCD Startup Screens ..............................27 Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 6 5.4 Performing EPO................................50 6 Communications ......................... 52 7 UPS Maintenance ........................53 8 Troubleshooting .......................... 55 9 Technical Specifications ......................57 A Alarm Handling ......................... 61 B Acronyms and Abbreviations ....................83 Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 7: Safety Precautions

    Follow the precautions and special safety instructions provided by Huawei when operating Huawei products. Huawei will not be liable for any consequences that are caused due to violations regarding general safety regulations and equipment design, production, and usage safety standards.
  • Page 8 Personal Requirements Only Huawei engineers or engineers certified by Huawei are allowed to perform UPS commissioning and maintenance. Otherwise, human injury or equipment damage may occur, and any resulting UPS faults will be beyond warranty scope.

  • Page 9: Electrical Safety

    The personnel who install the AC facility must be qualified to perform high voltage and AC operations.  When selecting, connecting, and routing power cables, ensure compliance with local laws and regulations. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 10 Before connecting a power cable, check that its label is correct. Fuse If a fuse needs replacing, ensure the new fuse is of the same type and specifications so that the system runs safely. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 11: Operating Environment

    Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 12  The environment that is conducive for the growth of microorganisms such as fungus or mildew.  The environment where rodents (such as mice) and insects exist. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 13: Mechanical Safety

    Store them in this environment for at least 24 hours.  Do not drop the cables directly from the vehicle. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 14 The air exhaust vent should not be blocked by any object. Before connecting a cable, ensure that the cable and cable label to be used meet the actual installation requirements. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 15: Quick Introduction

    G: series name Output capacity 3K: 3 kVA Input system V1: 100V Machine type DR: The standard model is derated. 2.2 Working Principle 2.2.1 Conceptual Diagram Figure 2-2 shows the UPS conceptual diagram. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 16: Working Modes

    If the bypass voltage and frequency are outside the range, the UPS transfers to normal or battery mode. ECO is short for economy control operation. By default, ECO mode described in this document refers to mains ECO mode. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 17: Appearance

    (5) Maintenance (6) Parallel ports (7) CAN communications ports bypass port (MBS) (MON1 and MON2) port (9) Battery (10) Optional card (11) AC output ports (pL and temperature sensor slot port Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 18 ≥ 16 mm . If the ESM is used at a temperature below 45° C, the cable size can be smaller but should be at least 10 mm Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 19 BMU anti-theft lock, overload lockout due to component failure, serial number conflict, input/output discharge Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 20 Blinking at short intervals: on for 0.125s and then off for 0.125s  All indicators are blinking: The ESM has entered the maintenance mode.  When the ESM is in sleep mode, the fault indicator is off except for reverse-connection protection. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 21 The communication between the rectifier and the external 0.5 Hz equipment is interrupted. Fault indicator Steady on The rectifier locks out due to output overvoltage. The rectifier has no output due to an internal fault. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 22: Optional Components

    (normal mode, battery mode, bypass mode, low battery voltage, bypass backfeed, and UPS faults) and two dry contract control inputs (one is the shutdown signal input, and the other is reserved). Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 23: Installation

     The ideal operating temperature for batteries is 20–30º C. Temperatures higher than 30º C shorten the battery lifespan and temperatures lower than 20º C reduces the backup time. Installation dimensions Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 24: Tools

    Get installation tools insulated to prevent electric shocks. Table 3-1 lists the installation tools. Table 3-1 Tools Tools Clamp meter Multimeter Label Phillips screwdriver (PH 2 x 150 mm or PH 3 x 250 mm) Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 25: Power Cables

    80 mm) Polyvinyl chloride Wire stripper Cotton cloth Brush (PVC) insulation tape Heat shrink tubing Heat gun Electrician's knife Protective gloves ESD gloves Insulated gloves Hydraulic pliers Cable tie 3.1.3 Power Cables Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 26 Battery CAN Ethernet cable RJ45 terminal communications cable PDU PE 25 mm 25 mm2 M6 OT 4.8 N· m terminal 6 mm2 M6 OT Battery PE 6 mm 4.8 N· m terminal Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 27: Unpacking And Checking

    Check the UPS bar code (which is at the rear panel of the UPS, near the air exhaust vent), and ensure that it complies with the order. If there is any discrepancy, contact your local Huawei office immediately. ----End 3.2 Installation Procedure For details, see the UPS2000-G-3 kVA Quick Guide (CTC).

  • Page 28: Installing A Backfeed Protection Device

    Dry contact: NC Breaking capability: 250 V AC, 5 A MY2N-J DC12V (OMRON control relay) Coil: 12 V rated voltage; rated current of HJ2-L-DC12V (Panasonic control relay) less than 1 A Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 29: Feedback Prevention Connections (With Dry Contract Control)

    Labels are neatly attached to both ends of each cable, and the information on the labels is concise and understandable. Ground cable connection The ground cable is securely connected to the equipment room ground bar. Measure the Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 30 0.1 ohm. Distances between cable ties Distances between cable ties are the same, and no burr exists. Operating environment Clean the conductive air and other sundries. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 31: Control Panel

    (3) Bypass (4) Fault indicator indicator indicator/INFO button (5) Startup/Enter/Battery (6) Down (7) Up button (8) Shutdown/Back Self-Check/Mute button button button 4.2 Indicators Table 4-1 describes the indicators on the control panel. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 32: Functional Buttons

    Enter/Startup/Battery  On the default screen in bypass mode, hold down Self-Check/Mute for more than 5 seconds. Release the button when you hear a beep sound. The UPS starts. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 33: Lcd

    The backlight turns off if you do not press any button within 30 seconds. 4.5 LCD Startup Screens Table 4-3 Symbol conventions Symbol Description Press A. Press B after you press A. Indicates omitted screens. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 34 The symbol conventions apply to all chapters in this document. The LCD figures in this document correspond to V200R001C91SPC070. The LCD updated without notice. If the LCD is updated, contact Huawei for the latest LCD figures. Figure 4-2 Description of the startup screen...

  • Page 35: Lcd Menu Hierarchy

    Main Menu Second-Level Menu Third-Level Menu Status Mains Input Bypass Input Battery Status Inverter Output UPS Output Local-UPS Load Parallel-System Load Environment Monitoring Runtime Alarms Active Alarms Historical Alarms Sort Alarms Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 36: Status Screen

    Shutdown Replace Batteries Maintain Batteries Sync Paral. Param. Reset Password About Model Version 4.6.1 Status Screen On the Main Menu screen, select Status, and press . The Status screen is displayed. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 37 Figure 4-6 Battery Status screen  Battery voltage parameter Battery string voltage  Battery current parameter Battery string current. + is displayed during battery charge, and – is displayed during battery discharge.  Status parameter Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 38 Figure 4-8 UPS Output screen  Voltage parameter Voltage on the UPS Output screen.  Current parameter Current displayed on the UPS Output screen  Frequency parameter Frequency on displayed the UPS Output screen. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 39 Temperature and humidity sensor humidity (Install an SNMP card and a temperature and humidity sensor; if they are not installed, NA is displayed.)  Internal temp. parameter Temperature in the UPS cabinet Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 40: Alarms Screen

    If an alarm is generated, press the INFO button on the default screen. On the Active Alarms screen, view the active alarms. Historical Alarms Screen The Historical Alarms screen displays the historical alarm information, such as the alarm serial number, severity, ID, and name. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 41 Active alarms are displayed by severity. The most critical alarms are listed first. √ is displayed next to a selected Sort Alarms. Clear Alarms Screen Clear the alarms that you can clear manually. Figure 4-15 Clear Alarms screen Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 42: Settings Screen

    You can change the feature code by choosing Settings > Basic Settings > Change Feature Code. The preset feature code is 999999. The feature code is used to restore the preset password. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 43 (DIP) switch on the Modbus card. The value cannot be changed on the LCD. − Baud rate parameter Set a baud rate for the Modbus card over the DIP switch on the Modbus card. The value cannot be changed on the LCD. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 44 The value ranges from Dry contact1 to Dry contact6. The default value is Dry contact6. System Parameters Screen  Parallel screen Figure 4-21 Parallel screen Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 45 Enabled. The default value is Disabled. In converter mode, the output voltage and frequency are fixed at the specified values. The parameter is configurable after the inverter shuts down.  Bypass screen Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 46 ± 0.5 Hz, ± 1 Hz, ± 2 Hz (default), ± 3 Hz, ± 4 Hz, ± 5 Hz, and ± 6 Hz. The parameter is configurable after the inverter shuts down.  ECO screen Figure 4-24 ECO screen Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 47 This parameter is used during the tests before shipment. The values include Disabled and Enabled. The default value is Disabled. The parameter is configurable after the inverter shuts down.  Others screen Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 48 The values include Disabled and Enabled. The default value is Enabled. If the value is Enabled, UPS startup takes additional 30–180 seconds. The parameter is configurable after the inverter shuts down. − Auto start parameter Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 49 Set the proportion of the discharge capacity to the total discharge capacity. The value ranges from 10% to 50%. The default value is 20%. The parameter is configurable in any mode.  Input power limiting parameter Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 50: Control Screen

    Maintain Batteries Menu  Shallow Discharge Test menu Figure 4-28 Shallow Discharge Test screen  Stop Test menu Figure 4-29 Stop Test screen Stop the shallow discharge test or capacity test. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 51: About Screen

    If the buzzer off, click Control Buzzer transfer to Buzzer on. Figure 4-32 Buzzer on screen 4.6.5 About Screen On the Main Menu screen, select About, and press You can view the UPS model, equipment serial number (ESN), and version number. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 52 PU1RSW2 parameter This item provides the rectifier logic software version.  PU1ISW1 parameter This item provides the inverter power software version.  PU1ISW2 parameter This item provides the inverter logic software version. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 53: Operations

    The voltage between the neutral wire and the ground cable is less than 5 V AC.  The mains supply voltage is 80–144 V AC during power-on (80–144 V AC after power-on). The battery voltage is greater than 46.5V DC. 5.2 Starting the UPS Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 54: Starting The Ups In Normal Mode

    Choose Main Menu > Settings > System Parameters > Output to view output settings. Step 4 Choose Settings > Battery Parameters, and set the Input power limiting based on the actual situation. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 55: Starting The Ups In Battery Mode

    Step 3 Perform startup operations on the UPS. The UPS runs in battery mode. Step 4 When the UPS runs properly, close the UPS downstream AC output switch to start loads. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 56: Shutting Down The Ups

    Turn on the EPO switch (provided by the customer). The UPS enters the EPO state. That is, the inverter shuts down, and the UPS will not transfer to bypass mode. Figure 5-3 shows the EPO cable connection on a single UPS. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 57 UPS will not transfer to bypass mode. Output terminals completely power off, which meets the EPO purpose.  The external EPO switch (switch or dry contact signals controlled by a switch) is provided by the customer. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 58: Communications

    The dry contact card provides six alarm dry contact outputs (normal mode, battery mode, bypass mode, low battery voltage, bypass backfeed, and UPS faults) and two dry contract control inputs (one is the shutdown signal input, and the other is reserved). Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 59: Ups Maintenance

    If any alarm is Monthly are operating present, rectify the properly by fault by checking the observing the status device status and icons on the LCD, parameters. and no fault or alarm information is Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 60 UPS and the and terminals are  Secure the output power distribution free from noticeable terminals. cabinet) sparks. EPO (if configured) Check the reliability Secure the terminals. Yearly of the EPO cable connection. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 61: Troubleshooting

    The UPS does not start is not Press for more than 5 after you press pressed long seconds until you hear a beep enough. sound. Overload occurs. Disconnect all loads, and restart the UPS. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 62 000001), use the feature code (the preset feature code is 999999) to activate the LCD password.  If you forget both the password and the feature code, contact local Huawei technical support. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 63: Technical Specifications

    Upper threshold: 10% or 15% at 120 V Lower threshold: 10% or 15% at 100 V Lower threshold: 10%, 15%, or 20% at 110 V Lower threshold: 10%, 15%, 20%, or 25% at 120 Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 64 If the UPS2000 is overloaded to less than 125%, it continues to work.  If the UPS2000 is overloaded to a range between 125% and 150%, it runs for 1 minute. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 65 442 mm x 560 mm x 190 mm (excluding mounting ears)  482 mm x 560 mm x 190 mm (including mounting ears) Weight 70 kg Installation mode Installed in a 19-inch rack Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 66 There is no conductive dust, corrosive gas, or explosion hazard.  Dust, corrosive substances, pests, molds, and other indicators should be controlled in accordance with class 4.1 requirements in ETSI EN 300 019-1-4 (V2.2.1). Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 67: A Alarm Handling

    Possible cause: The mains phase clear battery mode, without input three-phase sequence reverse affecting the power is incorrect. supply. Measure: Check that mains  If no batteries are input power cables are Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 68 Measures:  Check whether the bypass input voltage exceeds the configured range. If yes, change the range or wait until the bypass input recovers.  Check whether the Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 69 UPS and system is not are reversely connected. affected. Measure: Check the battery installation, and reinstall the batteries. 0022-01 Minor Automatic The power supply from the Possible causes: UPS and system is not Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 70 The battery string charge voltage exceeds the upper threshold. Measures:  Check battery parameter settings.  Disconnected the external battery charger, check whether the alarm is cleared. If not, contact Huawei Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 71 OFF. Measures:  Check whether the bypass output load is short-circuited using a multimeter.  Check whether cable connections are correct. If yes, switch on the bypass input circuit Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 72 UPS and system is not  The ambient overtem affected. temperature exceeds 40° C.  The air channel is blocked.  The fan is abnormal. Measures:  Decrease the ambient Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 73 The battery discharge warning result in system shutdown lasts too long. due to EOD.  The mains input is abnormal.  The number of batteries or battery capacity is incorrectly set. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 74  The hardware is damaged. Measures:  After you rectify the fault, restart the UPS.  Check whether the load type is supported by the Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 75 Measure: Contact Huawei If no battery is installed, the technical support for repair. UPS shuts down. The UPS transfers to another working mode or shuts down. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 76 0042-03 Internal Minor Automatic The power supply from the Possible cause: The NTC is fault clear UPS and system is not not connected or is affected. damaged. Measure: Contact Huawei Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 77 5%. 0042-13 Internal Critical Manual The UPS startup is not Possible cause: The fault clear/Power allowed. inverter is faulty. -off clear Measure: Contact Huawei technical support for repair. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 78 Measure: Contact the manufacturer to load software. Incompa Manual The UPS startup is not Possible cause: Software 0044-05 Critical tible ver. clear/Power allowed. and hardware versions do -off clear not match. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 79 The inverter shuts down. The Possible cause: The fault clear UPS transfers to bypass inverter is faulty. mode or has no output based Measure: Contact Huawei on the transfer logic. technical support for repair. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 80 0060-07 Inverter Critical Automatic The UPS starts upon Possible causes: fault clear shutdown.  The ambient The UPS may transfer to temperature exceeds another working mode or 40º C. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 81 The UPS transfers to another working mode or shuts down. Measure: Reduce the load or replace the UPS with a larger-capacity UPS. 0064-02 Critical Manual The UPS startup is not Possible cause: The load Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 82 UPS with a larger-capacity UPS. 0067-01 Paral. set Minor Automatic UPS startup is not allowed. Possible cause: The single failure clear UPS and parallel system settings do not match cable connections. Measures: Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 83  Replace the parallel cable.  Contact Huawei technical support for repair. 0085-01 Critical Manual The UPS shuts down. Possible cause: The EPO clear/Power button is pressed. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 84 0105-05 Minor Possible causes: failed. clear cannot monitor the digital  The communications signal processor (DSP) of the cable is faulty. power module.  An internal fault occurs in the UPS. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 85 UPS equipment room.  Replace the temperature and humidity transducer. 0133-01 Ambient Minor Possible causes: underte  The ambient mperatur temperature in the UPS equipment room is below the alarm Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 86 (default value: 10%).  The temperature and humidity transducer is faulty. Measures:  Check the ambient humidity of the UPS equipment room.  Replace the temperature Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 87  The mains loading capability is insufficient. Measures:  Check the mains input. If the mains input is abnormal, wait until the mains input recovers.  Check whether the UPS Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 88 Flash Automatic Possible cause: The flash 61440-01 Critical Files may be damaged. fault clear memory cannot be properly read or written. Measure: Contact Huawei technical support for repair. Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

  • Page 89: B Acronyms And Abbreviations

    CPLD dual in-line package depth of discharge digital signal processing emergency power-off economy control operation end of discharge electrostatic discharge equipment serial number Hypertext Transfer Protocol Secure HTTPS liquid crystal display Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.
  • Page 90 RS485 SELV safety extra-low voltage SNMP Simple Network Management Protocol total harmonic distortion of output voltage THDv telecommunication network voltage uninterruptible power system Universal Serial Bus VRLA valve regulated lead acid Issue 02 (2019-05-05) Copyright © Huawei Technologies Co., Ltd.

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